Golf-ball.



No. 889,709. PATENTED JUNE 2, 1908.

F.',H. MINGAY.

GOLF BALL.

APPLICATION FILED A-PR. 7,1906.

Wihess s:

FRANK H. MINGAY, OF BERFIELD, BRIDGE OF WEIR, SCOTLAND.

GOLF-BALL.

Specification of Letters Patent.-

Application filed April 7, 1906. Serial No. 310,517.

Patented June 2, 1908.

To all whom it may concern:

Be it known that I, FRANK HEDLEY MIN- GAY, of Berfield, Bridge of Weir, in the county of Renfrewshire, Scotland, bankteller, a subject of the King of Great Britain, have invented .certain new and useful Imrovements in Golf-Balls, of which the fol-' or heart is used, said corehaving a covering consisting of a strip or strips of rubber or other suitable substance wound on its exterior surfaceand the whole being inclosed in an outer casing of gutta percha or the like.

The invention has for its object to imprtlilv'e the construction of the cores of such a s. In carrying out my invention I employ an incompressible liquid such as water or other liquid or semi-liquid, contained in a suitable receptacle or shell made of elastic material, referabl vulcanized india rubber or the ike, and also preferably of spherical or nearly spherical shape and with or without an orifice for the admission ofthe liquid. The liquid is forced or inserted in the receptacle by means of a syringe,-pump, or other suitable means and when the receptacle is filled the nozzle of the syringe pump or instrument used for filling is Withdrawn and the orifice through Which'th'e liquid has been inserted is closed and sealed in any suitable manner. The usual rubber or other thread or tape is then wound in the customary manner on the outer surface of the recepta-' cle or shell, the substance contained in which,

owing to its fluid nature, readily assumes,

during the winding process, the spherical shape. When the receptacle has no orifice in it for the admission of'the liquid then a hole is piercedinit, either by means of the sharp nozzle of the filling instrument or by means of a needle or piercer. V I Any convenient incompressible. liquid,

such as water, treacle, glycerin, or the like, may be used to form the core or fill the .receptacle or shell of the core though, in practice, I have found that water gives very satisfactory results.

On the drawing annexed :Figure 1 shows in section a golf ball as constructed under my invention. Fig. 2 is a view, of the elastic receptacle for the liquid, but unfillech Fig. 3 is a view of the same expanded and filed with liquid.

The receptacle preferably consists of a small india rubber bag a of spherical or other suitable shape and which mayor may not be provided with a tubular Ipart b for the ad mission of the liquid. he fluid may be forced into the receptacle (1 by means of a syringe, pump, or the like, the nozzle of which is inserted in the tubular part b, when the receptacle is made with such a part, and, when the receptacle is filled and expanded (see Fig. 3) the nozzle is withdrawn, and the tubular art or orifice throu h which the liquid has een inserted closed either by tying a piece of cord, rubber, or other thread or the like 0 tightly round its exterior or by other suitable means. The usual rubber or other thread ortape f is tightly wound, in the customary manner, round about the outer surface of the receptacle and on the cover or casing formed by this rubber thread or ta e the usual outer cover or shell e may be formed or fitted in any well known and conexpanded by the liquid it, of course, by its contractile action, presses on the fluid and thereby insures, practically speaking, a solid although mobile core.

- of thin elastic material, a wrapping of elastic tape or thread under tension over said core,

and an incompressible liquid filling said ex-' panded core. I

. Intestimony whereof I aflix my signature in presence of two witnesses. F. H. MINGAY. Witnesses:

J. MOFADS, Jun.

, FRED MIDDLETON.

.venient manner. When the rubber bag a is 

